In Jainism, Kuber (also spelled Kubera) is regarded as the Yaksha, or attendant deity, of certain Tirthankaras, most notably Lord Parshvanatha, the 23rd Tirthankara. Yakshas and Yakshinis are guardian deities who are believed to serve and protect the Tirthankaras and their devotees. However, it is important to clarify that Yakshas like Kuber are not considered objects of primary worship; the supreme focus in Jainism is always on the Tirthankaras, who are revered as perfected souls and spiritual guides.

The role of Kuber in relation to a Tirthankara, particularly Parshvanatha, is as follows:

1. Guardian and Attendant: Kuber acts as a guardian deity, offering protection to the Tirthankara and the Tirthankara’s teachings.
2. Symbolic Role: Kuber is often associated with wealth and prosperity in Indian tradition, but in Jainism, his presence as a Yaksha signifies the subordination of material wealth to spiritual wealth and liberation.
3. Depiction in Temples: Statues or images of Kuber may be found as attendant figures in Jain temples, especially in the context of the Parshvanatha iconography.
4. No Direct Influence: Kuber, as a Yaksha, does not play a major or direct role in the spiritual journey or life events of the Tirthankaras themselves. Tirthankaras are self-realized souls who have transcended worldly attachments, including those symbolized by deities such as Kuber.

In summary, Kuber’s role is that of an attendant or guardian deity associated with certain Tirthankaras, but he does not influence the spiritual achievements or life of the Tirthankara. The central focus remains always on the Tirthankara’s teachings and example.